JPS616749A - Loading method of communication control processor - Google Patents

Abstract

PURPOSE:To add a new function to a communication control device without stopping communication by extracting a new load module from a library, rearranging addresses and then loading the rearranged addresses to a communication control device. CONSTITUTION:The communication control device 2 includes a network control program (NCP) loading module. A load module to be a constitutional element of the NCP loading module is stored in the library 4. When a command to load the load module is inputted from a console 5, a host processor 1 extracts the load module from the library 4, rearranges its addresses and then command the device 2 to execute the load module.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention provides a method for loading a new load module into a communication control processing device when a host processor retrieves the new load module from a library and sets it to an address. The present invention relates to a loading method for a communication control processing device, in which a relocation is performed and then the data is loaded into the communication control processing device.

[Prior art and problems]

The communication control processing unit has a built-in NCP (nenowork control program) load module.

NCP is responsible for identification of transmission control characters, line timeout control, error checking, character disassembly and assembly, polling and selection, call and response in switched networks, insertion and deletion of transmission control characters, code conversion, and other functions. It performs processing. The NCP load module is created by performing linkage to incorporate modules and rearrange addresses. When an NCP load module is loaded into a communication control processing unit and a new module (fs function) is added during communication (operation), conventionally the NCP load module is recreated and addresses are rearranged. After that, communication was stopped and the newly created NCP load module was loaded into the communication control processing unit. Such a conventional method has a drawback in that communication must be stopped when a new function is to be added to the communication control processing device.

[Purpose of the invention]

SUMMARY OF THE INVENTION The present invention aims to eliminate the above-mentioned drawbacks, and provides a loading method for a communication control processing device that allows a new load module to be loaded into the communication control processing device without stopping communication. There is.

[Means to achieve the purpose]

Therefore, the loading method of the communication control processing device of the present invention consists of a host processor, a communication control processing device that performs various processes according to instructions from the host processor, and components of a network control program. and a library storing various types of load modules to be loaded, and when a command is input from the console to instruct the host processor to load the load module into the communication control processing device, The communication control device is asked whether the load module is being loaded, and if a negative response is returned, a request to load the module is sent to the communication control processing device, and the address information to be loaded is sent to the communication control device. is sent from the communication control processor, the corresponding load module is extracted from the library, addresses are relocated, and the load module whose addresses have been relocated is to be loaded. When the communication control processor receives the question as to whether the load module is loaded, the communication control processor refers to a predetermined control table to determine whether the load module is loaded or not. If the load module is not loaded, a negative response is returned, and if a request to load the load module is received, the host processor is notified of the starting address of the memory area where the load module should be stored. However, when a load module is requested to be loaded, the transmitted load module is stored in the memory area.

[Embodiments of the invention]

Hereinafter, the present invention will be explained with reference to the drawings.

FIG. 1 is a diagram showing an example of the configuration of a network to which the present invention is applied. In FIG. 1, 1 is a host processor, 2 is a communication control processing unit, 3 is a terminal, 4 is a library, and 5 is a console. The communication control processing device 2 has a built-in NCP load module.

The library 4 stores in advance various load modules that are to be components of the NCP load module.

FIG. 2 is a diagram illustrating processing when loading a load module into a communication control processing device. The illustrated example is an example in which load module A is loaded.

■ When the command “Load load module A” is input from the console 5, the host
The processor 1 performs load/load processing on the communication control processing device 2.
Asks if module A is already loaded.

(2) The communication control processing device 2 refers to a predetermined control table to check whether the load module A is loaded or not, and if it is not loaded, returns a - response.

- Upon receiving the response, host processor 1
sends a request to the communication control processing device 2 to load the load module.

(2) Upon receiving this loading request, the communication control processing device 2 notifies the host processor 1 of the starting address X of the area where the load module is to be stored.

■ When post processor 1 receives this notification,
Load module A is taken out from library 4 and addresses are rearranged. Then, it requests the communication control processing device 2 to load the load module A whose address has been rearranged.

■ When the OK to load the load module A is returned from the communication control processing bag W2, the host processor 1
instructs the communication control processing device 2 to execute load module A.

FIG. 3 is a diagram showing the software configuration of the host processor and communication control processing device. Important features of the invention are:
A load module in the library 4, for example, load module A (function A), is subjected to relocation processing by two processing programs existing in the host processor 1 and the communication control processing device 2, and The point is that it becomes part of the network control program that can be executed in the loading area LA in . This processing program relocation process is performed on the host processor 1 side by loading the library 4 starting from address O, for example.
Align module A with the starting address of the loading area LA that has been notified, and also add an external reference symbol or the like to refer to other network control programs that have already been loaded from loading module A on the communication control processing device side. The task is to perform the joining process.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, new functions can be added to the communication control processing device without stopping communication.

[Brief explanation of drawings]

Fig. 1 is a diagram showing an example of the configuration of a network to which the present invention is applied, Fig. 2 is a diagram illustrating the process of loading a load module into a communication control processing device, and Fig. 3 is a diagram showing a host processor and communication control processing. FIG. 3 is a diagram showing the software configuration of the device. 1 host processor, 2-communication control processing device, 3
1 terminal, 4-library, 5-console. Patent Applicant Fujitsu Co., Ltd. Representative Patent Attorney Kyotani 4th Division Figure 1 City Figure 2

Claims (1)

[Claims] The host processor is equipped with a host processor, a communication control processing device that performs various processes according to instructions from the host processor, and a library that stores various load modules that are to be components of a network control program. When the processor receives a command from the console that instructs the load module to be loaded into the communication control processing unit, the processor queries the communication control unit as to whether the load module has been loaded, and returns a negative response. If a response is returned, a request for loading is sent to the communication control processing device, and if the address information to be loaded is sent from the communication control processing device, the corresponding load from the library is sent. - The communication control processing device is configured to take out a module, perform address relocation, and request the communication control processing device to load the load module with address relocation performed, and the communication control processing device When a question is received as to whether the load module is loaded, it is checked whether the load module is loaded by referring to a predetermined control table, and if it is not loaded, a negative response is returned and the load module is loaded. When a request to load a load module is received, the host processor is notified of the starting address of the memory area where the load module should be stored, and when a load module is requested to be loaded, the load module sent is sent to the host processor. A loading method for a communication control processing device, characterized in that the module is configured to be stored in the memory area.